Title :
THz time-domain spectroscopy of THz quantum cascade lasers
Author :
Darmo, J. ; Kröll, J. ; Martl, M. ; Dhillon, S.S. ; Marcadet, X. ; Calligaro, M. ; Sirtori, C. ; Unterrainer, K.
Author_Institution :
Photonics Inst., Vienna Univ. of Technol., Vienna
Abstract :
Summary form only given. We have combined few-cycle THz spectroscopy with quantum cascade laser (QCL) technology. This combination allows to perform unique THz time-domain measurements of THz-QCLs. By coupling the few-cycle THz pulse into the waveguide of the QCL, the processes within the active zone can be probed. This gives direct information regarding the energy, dynamics and coherence of transitions in the QCL structure.
Keywords :
quantum cascade lasers; submillimetre wave lasers; submillimetre wave spectroscopy; THz spectroscopy; quantum cascade lasers; time-domain measurements; time-domain spectroscopy; Coherence; III-V semiconductor materials; Optical losses; Optical waveguides; Performance evaluation; Photonics; Quantum cascade lasers; Spectroscopy; Stimulated emission; Time domain analysis;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516392
